Corn-separating screen



(No Model.)

G. -& J. GLOSZ CORN SEPARATING SGREEN.

No. 471,072. Patented Mar. 15,1892.

WITNESSES.

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STATES PATENT OFFICE.

CORN-SEPARATING SCREEN.

SPECIFICATION forming part of Letters Patent N 0. 471,072, dated March 15, 1892. Application filed June 25, 1891. Serial No. 397,464. (No model.)

To all whom it may concern.-

Be it known that we, CHARLES OLOSZ and JACOB CLOSZ, citizens of the United States, residing at St. Ansgar, in the county of Mitchell and State of Iowa, have invented a certain new and useful Improvement in Corn-Screens, of which the following is a specification.

Corn is usually mixed with husks, silks, and cob as it comes from the shellers, and by reason of the irregular shapes and various sizes of the broken pieces of cobs the screens as hitherto constructed for separating and cleaning corn are liable to and do choke and clog by the lodging of pieces of cobs in the openings, thereby causing loss of corn, lessening the screening capacity, and require frequent attention to clear out the clogged openings.

lVe have produced a screen specially adapted for use in corn-shellers and corn-cleaners and having large screening capacity, not liable to choke and clog with anything, and wherein the openings and the surface construction are designed with special fitness for cleaning and for separating corn and for carrying off the matters which it is important to separate from the corn.

The special features of novelty in this construction will be set out in the claims coneluding this specification, in connection with the accompanying drawings, in which Figure 1 represents in top view so much of a sheet-metal-platform screen as illustrates our improvement. Fig. 2 is a vertical longitudinal section of the same on the line a of Fig. 1. Fig. 3 shows a similar view on theline b of Fig. 1. Fig. 4 shows a similar view on the line 0 of Fig. 1. Fig. 5 is a cross-section on the line d of Fig. 1,looking toward the discharge end of the screen; and Fig. 6 is a view in perspective of the bell-shaped tongues and a portion of the screeningsurface which bounds the bell-shaped opening.

The platform is preferably divided into longitudinal surface-passages by corrugations 1 of V shape in cross-section, and within these passages are formed bell-shaped openings, made by single cuts and supplemented by a raised tongue 2 of corresponding form standing in line toward the discharge end of the screen. The base of the bell-shaped opening terminates in an outward-curved fissure 3 at the base of the corrugation on each side of the tongue, while the latter rises therefrom on an incline to thecrown of the bell, whereby a channel is formed between the corrugations and each side of the line of bell-shaped tongues, along which the grain and other matters are moved outward toward the discharge end of the platform by the action of its longitudinal movement. In these channels the surface is formed along the forward edge of said opening with a fish-shaped slope 4, which slants into the opening with the tail preferably terminating at the raised apex 5 of the opening. Over this opening the tongue stands with an upward and forward incline having its greatest convexity at its rear end 5 and slightly flattened and turned up at the crown or forward end. Bounding this fish-shaped.

slope 4 is a surface ridge 6, Fig. 4, which, starting from the base of the corrugation, terminates at the apex 5 of the opening. This ridge is approximately horizontal Where it crosses the channel and rises abruptly to the apex. Forward of this ridge 6 the surface slants in a sort of basin to the rear edge 7 of the opening, which at this point stands higher than the sloping surface 4 of the other edge, and the opening between these two edges has the form of a shallow crescent, which at one horn terminates in the fissure 3, and at the other horn terminates at a point about midway the length of the tongue, looking with a birds-eye View. In the direction of its length this fish-shaped slope 4 is concave and the widest parts 8 of the opening are under the edges of the tongue at each side just back of the crown 9 of the bell, and from these points 8 the width of the opening diminishes to its apex 5. The channels by this construction are intersected by the fissure ends of the crescent openings, by the fish-shaped sloping surfaces, and by the ridges which bound the sloping surfaces, each standing obliquelv across said channels, while the surface of the latter forward of the ridges forms a shallow basin 10, and it is this construction, in connection with the bell-shaped tongues, which constitutes the novelty claimed and which we have found especially effective in a cornscreen. In the movement of the corn the bellshaped tongues 2 act to direct it into the channels and over the oblique fissure ends 3 of the openings. The fish-shaped sloping sides 4 act to direct the corn along the edges of the tongue to the widest parts 8 of the opening through which the corn passes under the tongue, while the ridges 6 serve to hold the corn within the sloping concaves 4 and facilitate its separation from the husks, silks, and cobs,which are thrown forward over the ridges into the basins 10 of the channels and carried off. The action of these surface parts has the effect of diverting the corn sidewise from its course and discharging it freely through the openings at the opposite sides of each tongue, where the wedge form of the opening, as viewed from its side, has its widest part 8 and where the tongue acts as a top and side guard over that part of the opening which form's the crown of the bell. Looking at the side of each opening, it will be seen that the tongue extends back of the base or fissure ends of the openings and terminates at the highest point or apex of the adjacent opening, and that the width of the opening at this apex point under the tongue is less than the width at the sides of the tongue, where the corn is directed by a free sliding movement into and down through the opening. \Ve have stated that the openings are of less width at the crown or apex than the sides; but this is not important. The openings and the tongues formed as describedand the sloping surfaces under the side edges of the tongues give a most effective cleaning action for the blast.

\Ve claim as our improvement- 1. A sheet-metal-platform screen formed with bell-shaped openings supplemented by tongues of corresponi'ling form, said openings bounded by fish-shaped sloping surfaces extending from the horns of the bell-shaped opening and terminating in its elevated apex, for the purpose stated.

2. A sheet-metal-platform screen formed with bell-shaped openings supplemented by tongues of corresponding form, said openings bounded by fish-shaped sloping surfaces extending from the horns of the bell-shaped opening and terminating in its elevated apex, a ridge bounding said sloping surface, and a sloping-basin surface extending forward of said ridge, for the purpose stated.

3. A sheet-metal platform having a screen in g-surface of longitudinal corrugations, bellshaped openings supplemented by elevated tongues of corresponding form, fish-shaped sloping concave surfaces bounding said openings, ridges bounding said sloping surfaces, and surface-basins extending forward of said ridges, for the purpose stated.

A corrugated sheet-metal platform screen formed with bell-shaped openingshavingtheir forward standing edges bounded by fishshaped slopes 4:, having their greatest width crossing the path of the stuff along the base of said corrugations, and supplemented by raised tongues forming said openings, for the purpose stated.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

CHARLES CLOSZ. JACOB CLOSZ.

\Vitnesses:

llllARTIN Mon, Jenn. 'lonnnra x. 

